Stealth Startup Spy #299 - by Drake Dukes
Stealth Startup Spy #299
Ex-Mayo Clinic researcher builds AI platform for capital market firms, Google & Dropbox alum raises $7M for Medicare parent care, & Ex-Carta VP of GTM launches a stealth venture
Dec 18, 2025
🚀 We just launched a new newsletter — Company Launch Tracker.
We’re tracking company launches as they happen and surfacing the most interesting new founders and startups (yes, all outside of this stealth activity too). If you want to stay ahead of the curve, this is where you’ll find them first.
Right now we’ve got 5 subscribers: my wife, my mom, and that high school buddy who won’t stop pitching me his app. Be smart like them and get in early 👇
In this issue of the Stealth Startup Spy, here is what we will uncover:
-
Ex-Capdesk CEO & Carta VP of GTM launches stealth company
-
Ex-Mayo Clinic AI researcher builds YC-backed platform for capital markets
-
Google & Dropbox product leader exits stealth with $7M to manage Medicare-covered parent care
-
Ex-Sanctuary AI & Red Thread founder automates compute finance, raises $4.5M pre-seed
-
Ex-Meta GenAI & AI Agents Engineering Manager launches stealth venture
-
And more…
Now let’s shine the spotlight… 💡💡💡
🕵️♂️Founders Coming Out of Stealth
Real-time updates from founders who debut what they’ve been working on under stealth mode
Mai Trinh - Co-Founder at Internet Backyard
FounderDNA : Serial Founder
Prior Experience : Ex-Founder at Red Thread Club, ex-Technical Project Manager at Sanctuary AI, ex-Director Marketing & Biz Dev at Farpoint Vision
Internet Backyard automates quoting, billing, payments, and financial workflows for compute providers, enabling scalable, transparent, and tradable compute supply.
HQ: San Francisco, California, United States
Industry: Software Development | Team Size: 5
Latest Funding: $4.5M Pre-Seed Round on 12/9/2025
Key Investor: Basis Set, Crucible Capital, Maple VC, Breakers, Operator Collective, Ian Crosby, Jay Adelson, Geordie Rose
Time Spent in Stealth Mode: 3 months
Kevin Lu - Co-Founder & CEO at Atrium
FounderDNA: Serial Founder, Masters Degree
Prior Experience: Ex-Investment Manager at Airtree, ex-Board Observer at M^0 Labs, ProcurePro & Go1, ex-Investment Analyst at Reinventure, Ophir & Trident, ex-Co-Founder at Conveyed
Connect on:LinkedIn
Atrium is a smart communications suite that organizes your email, contacts, and calendar, automatically enriching them and surfacing what matters most so you never lose touch or miss opportunities.
HQ: Australia
Industry: Technology, Information and Internet | Team Size: 4
Time Spent in Stealth Mode: 4 months
Jenny Lee - Co-Founder & CEO at Hera
🔎Featured Founder under stealth mode inStealthStartSpy#212
FounderDNA: Serial Founder, Technical Founder, Former FAANG, Top 10 University
Prior Experience: Ex-Product at Headway, ex-Product Manager at Dropbox, ex-Software Engineer at Google
Hera manages the care for parents, covered by Medicare.
HQ: New York, New York, United States
Industry: Technology, Information and Internet | Team Size: 20
Latest Funding: $7M Seed Round on 12/10/2025
Key Investors: Accel, IA Ventures, BoxGroup
Time Spent in Stealth Mode: 13 months
David Kotoyan - Founder & CEO at Fetz
FounderDNA: Masters Degree, Former FAANG
Prior Experience: Ex-Supply Planning & Legal Intern at Anduril, ex-Strategic Finance Intern at National Football League, Business Economics at UCLA
Co-Founder:Yiorgos Chochlakis (Ex-Applied Scientist at Amazon Web Services)
FETZ is developing technology and designing products that expand human self-awareness and enhance the way people communicate.
HQ: Los Angeles, California, United States
Industry: Embedded Software Products | Team Size: 3
Time Spent in Stealth Mode: 6 months
Ajay Misra - Founder at o11
FounderDNA: Serial Founder, Technical Founder, Top 10 University
Prior Experience: Ex-AI Researcher at Mayo Clinic, ex-Head of AI at Cal AI (10M users, $40M ARR)
o11 (YC W26) brings bulge bracket level speed and output quality to capital markets firms of any size.
HQ: San Francisco, California, United States
Industry: Software Development | Team Size: 4
Time Spent in Stealth Mode: 2 months
🕵️♂️Key Talent Going Under Stealth
Illuminating clues left behind by world class talent and influential innovators who just went into stealth mode
Christian Gabriel - Co-Founder & CEO at Stealth
FounderDNA : Technical Founder, Masters Degree, Prior Exit
Prior Experience : Ex-VP GTM at Carta, ex-CEO & Co-Founder at Capdesk (Acquired by Carta)
Connect on:LinkedIn
HQ: London Area, United Kingdom
Time Spent in Stealth Mode: 1 month
Brook Lovatt - Founder at Stealth Startup
FounderDNA : Serial Founder, Top 10 University
Prior Experience : Ex-Chief Product Officer at SecureAuth, ex-CEO at Cloudentity, ex-Software Engineer at IBM
Connect on:LinkedIn
HQ: United States
Time Spent in Stealth Mode: 5 months
Bowen Gong - Founder at Stealth Startup
FounderDNA: Technical Founder, Masters Degree, Former FAANG, Top 10 University
Prior Experience : Ex-Engineering Manager - GenAI & AI Agents at Meta, ex- Director of Financial Technology at Walmart
Connect on:LinkedIn
HQ: United States
Time Spent in Stealth Mode: 1 month
Ulises Reyes - Co-Founder & CTO at Stealth Startup
FounderDNA : Technical Founder, Masters Degree
Prior Experience : Ex-CTO at dataroomHQ, ex-Vice President of Engineering at DataRobot, ex-Sr. Software Engineer at Vista International Operations, MS in Computer Software Engineering at UT Austin
Connect on:LinkedIn
HQ: Germany
Time Spent in Stealth Mode: 1 month
Frank Dale - Co-Founder at Stealth Startup
FounderDNA : Serial Founder, Masters Degree, Prior Exit
Prior Experience : Ex-Chief Product Officer at Salesloft, ex-Co-Founder, CEO at Costello (acquired by Salesloft), ex-Chief Operating Officer at DemandJump, ex-CEO & President at Compendium (acquired by Oracle)
Connect on:LinkedIn
HQ: United States
Time Spent in Stealth Mode: 2 months
🚨Here’s the deal 🚨This email has gotten too big. Exciting, but with more people following it, the edge diminishes. I’ve thought long and hard about what to do to preserve the value in the signals. I’m not sure about the final direction yet, but in the meantime I’ve been sending an email 48 hours earlier to a select group of paid subscribers. The feedback has been pretty positive so I’m going to open up the list for another 100 spots. To get signals early, Apply here!
Stay Stealthy,
Drake
Thank you for reading. If you liked it, share it with your friends, colleagues and everyone interested in staying ahead of the hidden developments in tech. Subscribe below and follow us onX / Twitter to never miss a company operating under stealth again.
Stealth Startup Spy is a data-driven newsletter for investors, journalists and tech enthusiasts interested in uncovering the next big move for key talent, real-time stealth company launches and technology advancements not in plain sight. We leverage the technology built at Gravity to shine a light on the hidden world of stealth startups.